package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;


@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 登录
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request,@RequestBody Employee employee){

        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3、如果没有查询到则返回登录失败结果
        if(emp == null){
            return R.error("登录失败");
        }

        //4、密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 退出登录
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }


    /**
     * 新增
     * @param httpServletRequest
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest httpServletRequest,@RequestBody Employee employee){
        log.info("新增的员工信息是：{}"+employee.toString());
        //设置初始密码并且通过md5去加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //设置创建时间，更新时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//        //获取谁创建的，并插入数据库
//        //获取创建人
//        //在登陆时已经通过employee插入session
//        Long employee1 = (Long) httpServletRequest.getSession().getAttribute("employee");
//        //插入数据库
//        employee.setCreateUser(employee1);
//        employee.setUpdateUser(employee1);
        employeeService.save(employee);
        return R.success("新增员工成功");
    }


    /**
     * 分页
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){

        log.info("page:{},pageSize:{},name:{}",page,pageSize,name);

        //分页构造器
        Page pageInfo = new Page(page,pageSize);

        //条件构造器
        LambdaQueryWrapper<Employee> lambdaQueryWrapper=new LambdaQueryWrapper();

        //判断name是否为空，不为空才执行这个like
        lambdaQueryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);

        //构造排序
        lambdaQueryWrapper.orderByAsc(Employee::getUpdateTime);

        employeeService.page(pageInfo,lambdaQueryWrapper);


        return R.success(pageInfo);
    }


    /**
     * 更新员工信息
     * @param httpServletRequest
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest httpServletRequest,@RequestBody Employee employee){
        log.info(employee.toString());


        //获取谁更新的，并插入数据库
        //获取更新人
        //在登陆时已经通过employee插入session
        Long empID = (Long) httpServletRequest.getSession().getAttribute("employee");
        //插入数据库
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empID);
        employeeService.updateById(employee);
        return R.success("员工账号更新成功");
    }


    /**
     * 通过id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> gatById(@PathVariable Long id){
        Employee employee = employeeService.getById(id);
        if(id!=null){
            return R.success(employee);
        }
        return R.error("没有查询到员工信息");
    }

}
